我有一个使用Win32 API模拟的Web应用程序。我最近从一次旅行回来,找到了冒充失败的应用程序部分。
模仿的原因是存在用于特定目的的网络共享。当我的Web应用程序访问该网络共享时,它必须模拟一个特殊帐户。为了便于讨论,uid是“Bob”,密码是“1234”,域名是“home”。
两周前,我编写了我的程序,使用Win32 API来模仿Bob,一切都很顺利。现在,Win32 API指示登录失败。我无法弄清楚可能会发生什么变化。 具体而言,服务器指示它无法模仿Bob。在服务器实际尝试访问网络共享之前发生错误。
奇怪的是,如果我使用MSTSC连接到我的Web服务器,我可以在Windows资源管理器中单击“映射网络驱动器”并使用Bob @ home和密码1234访问这些文件。(我输入通过单击“映射网络驱动器”对话框中的“使用其他用户名连接”来获取uid和密码
当我尝试通过模拟访问我的网络共享而不是使用Windows资源管理器时,似乎必须发生一些不同的事情。
有什么区别?
更新:我觉得这个问题的答案是,当我通过Windows资源管理器访问我的文件时,存在某种被拒绝的登录权限,而这种权限在某种程度上没有涉及。
答案 0 :(得分:2)
确保您使用UNC路径访问该文件夹:
string path = @"\\server\folder";
我不知道你的模拟课是什么样的,但这是我用于类似任务的课程:
/// <summary>
/// Leverages the Windows API (advapi32.dll) to programmatically impersonate a user.
/// </summary>
public class ImpersonationContext : IDisposable
{
#region constants
private const int LOGON32_LOGON_INTERACTIVE = 2;
private const int LOGON32_PROVIDER_DEFAULT = 0;
#endregion
#region global variables
private WindowsImpersonationContext impersonationContext;
private bool impersonating;
#endregion
#region unmanaged code
[DllImport("advapi32.dll")]
private static extern int LogonUserA(String lpszUserName, String lpszDomain, String lpszPassword, int dwLogonType, int dwLogonProvider, ref IntPtr phToken);
[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern int DuplicateToken(IntPtr hToken, int impersonationLevel, ref IntPtr hNewToken);
[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern bool RevertToSelf();
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
private static extern bool CloseHandle(IntPtr handle);
#endregion
#region constructors
public ImpersonationContext()
{
impersonating = false;
}
/// <summary>
/// Overloaded constructor and begins impersonating.
/// </summary>
public ImpersonationContext(string userName, string password, string domain)
{
this.BeginImpersonationContext(userName, password, domain);
}
#endregion
#region impersonation methods
/// <summary>
/// Begins the impersonation context for the specified user.
/// </summary>
/// <remarks>Don't call this method if you used the overloaded constructor.</remarks>
public void BeginImpersonationContext(string userName, string password, string domain)
{
//initialize token and duplicate variables
IntPtr token = IntPtr.Zero;
IntPtr tokenDuplicate = IntPtr.Zero;
if (RevertToSelf())
{
if (LogonUserA(userName, domain, password, LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT, ref token) != 0)
{
if (DuplicateToken(token, 2, ref tokenDuplicate) != 0)
{
using (WindowsIdentity tempWindowsIdentity = new WindowsIdentity(tokenDuplicate))
{
//begin the impersonation context and mark impersonating true
impersonationContext = tempWindowsIdentity.Impersonate();
impersonating = true;
}
}
}
}
//close the handle to the account token
if (token != IntPtr.Zero)
CloseHandle(token);
//close the handle to the duplicated account token
if (tokenDuplicate != IntPtr.Zero)
CloseHandle(tokenDuplicate);
}
/// <summary>
/// Ends the current impersonation context.
/// </summary>
public void EndImpersonationContext()
{
//if the context exists undo it and dispose of the object
if (impersonationContext != null)
{
//end the impersonation context and dispose of the object
impersonationContext.Undo();
impersonationContext.Dispose();
}
//mark the impersonation flag false
impersonating = false;
}
#endregion
#region properties
/// <summary>
/// Gets a value indicating whether the impersonation is currently active.
/// </summary>
public bool Impersonating
{
get
{
return impersonating;
}
}
#endregion
#region IDisposable implementation
~ImpersonationContext()
{
Dispose(false);
}
public void Dispose()
{
Dispose(true);
}
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (impersonationContext != null)
{
impersonationContext.Undo();
impersonationContext.Dispose();
}
}
}
#endregion
}
使用ImpersonationContext
:
using (ImpersonationContext context = new ImpersonationContext("user", "password", "domain"))
{
if (context.Impersonating)
{
Process.Start(@"/Support/SendFax/SendFax.exe");
}
}